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SYAD: Symposium SAMOP Dissertation Prize 2024

SYAD 1: SAMOP Dissertation Prize

SYAD 1.3: Invited Talk

Monday, March 11, 2024, 15:30–16:00, Paulussaal

Quantum optical few-mode models for lossy resonators — •Dominik Lentrodt — Max-Planck-Institut für Kernphysik, Heidelberg — Albert-Ludwigs-Universität Freiburg

Few-mode models — such as the Jaynes-Cummings model and its generalisations — have been an indispensable tool in studying light-matter interactions in optical resonators and provide the theoretical basis for many experiments. Recently, however, novel regimes featuring strong coupling in combination with large losses have attracted attention in various experimental platforms. In this context, central assumptions of these canonical quantum optical models break down and lead to discrepancies in observations, which constituted an open problem.

In this talk, we will discuss recent extensions of such approaches and an associated class of loss-induced multi-mode effects. We show how the open Jaynes-Cummings model can be derived from first principles, circumventing usually employed fitting procedures and resolving aforementioned discrepancies. We will further discuss how these developments have led to ab initio models for x-ray quantum optics with Mössbauer nuclei — an emerging field at the high-energy frontier of quantum optics — enabling predictions for upcoming experiments.

Keywords: Cavity Quantum Electrodynamics; X-ray physics; Mössbauer nuclei; Quantum Dynamics; Light-matter interactions